GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module
Table 2: Memory Seat Module

Body Control Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Key ON, Engine OFF.

8 Digit GM Part Number

Module Information

Numeric

XXXXXXXX

Door Ajar Switches

Input

Active/Inactive

Inactive

Door Lock Motor

Output

On/Off

Off

Door Unlock Motor

Output

On/Off

Off

Door Unlock Switch

Input

Active/Inactive

Inactive

Driver Door Open Sw.

Input

Active/Inactive

Inactive

Driver Door Unlock Motor

Output

On/Off

Off

Key Cylinder Lock Switch

Input

Active/Inactive

Inactive

Key Cylinder Unlock

Input

Active/Inactive

Inactive

Lock/Unlock Switch

Data

Volts

0.0 -  25.5 Volts

Passenger Door Open Sw.

Input

Active/Inactive

Inactive

Rear Door Open Switch

Input

Active/Inactive

Inactive

Memory Seat Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Key ON, Engine OFF.

8 Digit GM Part Number

Module Information

Alpha-Numeric

XXXXXXXX

Battery Voltage

Mirror Input/Output

Voltage

12.8 Volts

Driver Identification

Mirror Input/Output

Driver 1/Driver 2

Driver 1

Left Horizontal Motor

Mirror Input/Output

Right/Left/Off

Off

Left Vertical Motor

Mirror Input/Output

Up/Down/Off

Off

Lt. Horiz. Mirror Pos

Mirror Sensor Data

Voltage

0.75- 4.50 Volts

Lt. Vertical Mirror Pos

Mirror Sensor Data

Voltage

0.75- 4.50 Volts

Memory Switch

Mirror Input/Output

Driver 1/Driver 2/ Easy Exit/Inactive

Inactive

Memory 1 Left Horizontal Value

Mirror Memory Data

Voltage

0.75- 4.50 Volts

Memory 1 Left Vertical Value

Mirror Memory Data

Voltage

0.75- 4.50 Volts

Memory 1 Right Horizontal Value

Mirror Memory Data

Voltage

0.75- 4.50 Volts

Memory 1 Right Vertical Value

Mirror Memory Data

Voltage

0.75- 4.50 Volts

Memory 2 Left Horizontal Value

Mirror Memory Data

Voltage

0.75- 4.50 Volts

Memory 2 Left Vertical Value

Mirror Memory Data

Voltage

0.75- 4.50 Volts

Memory 2 Right Horizontal Value

Mirror Memory Data

Voltage

0.75- 4.50 Volts

Memory 2 Right Vertical Value

Mirror Memory Data

Voltage

0.75- 4.50 Volts

Mirror Switch State

Mirror Input/Output

Left Right/Left Left/Left Up/Left Down/Right Right/Right Left/Right Up/Right Down/Idle

Idle

PRNDL State

Mirror Input/Output

Park/Reverse/Neutral/Drive/First

Park

Right Horizontal Motor

Mirror Input/Output

Right/Left/Off

Off

Right Vertical Motor

Mirror Input/Output

Up/Down/Off

Off

Rt. Horiz. Mirror Pos.

Mirror Sensor Data

Voltage

0.75- 4.50 Volts

Rt. Vertical Mirror Pos.

Mirror Sensor Data

Voltage

0.75- 4.50 Volts

System Power Mode

Mirror Input/Output

Off Awake/Accessory/Run/Crank

Off Awake